Dual power supply device and system and method for operating autonomous vehicle

Abstract

The invention relates to a dual powered device and a system and method for operating an autonomous vehicle. A dual power supply apparatus for a vehicle includes: at least one power device configured to supply power to an autonomous driving load or a conventional load in the vehicle; a pair of power lines disposed between the at least one power device and the autonomous driving load; and a processor configured to determine whether a first power line of the pair of power lines has failed, and supply power to the autonomous driving load through a second power line of the pair of power lines in response to the failure of the first power line.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of Korean Patent Application No. 10-2023-0076883 filed in the Korean Intellectual Property Office on June 15, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present invention relates to a dual power supply device and a system and method for operating a vehicle, and more particularly, to a dual power supply device, system and method capable of preventing accidents that may occur in the event of a power supply failure in an autonomous driving vehicle. Background Art

[0004] Due to environmental issues, government regulations and high oil prices, it is necessary to continuously improve the fuel efficiency of vehicles, so environmentally friendly vehicles have become the focus of attention. In particular, autonomous driving vehicles are likely to be manufactured as environmentally friendly vehicles that utilize electrical energy rather than fuel vehicles.

[0005] In the case of such an environmentally friendly vehicle, such a vehicle may include a dual power supply system (e.g., a dual power supply system for an autonomous vehicle), thereby providing a redundant power supply method. However, the regulatory specifications or requirements for the dual power supply system have not yet been standardized and may differ for each manufacturer or research institution, so it is necessary to develop a standardized redundant power supply technology. Summary of the invention

[0006] The present invention provides a dual power supply device, a system and a method, which can prevent power supply failure of an autonomous driving vehicle by configuring each power supply line between the power supply device and the autonomous driving load as a pair of parallel power lines and providing redundant power through another power line in response to a fault diagnosis of one power line, thereby improving the reliability of the autonomous driving vehicle.

[0007] The dual power supply apparatus, system and method are capable of improving the reliability of autonomous vehicles by utilizing a separate power storage device or other power conversion modules that have not failed and stably supplying power to the autonomous vehicles in response to a failure of a power conversion module that converts power to a low voltage level.

[0008] The technical objectives of the present invention are not limited to the above objectives, and those skilled in the art can clearly understand other technical objectives not mentioned through the description of the claims.

[0009] An exemplary embodiment of the present invention provides a dual power supply device for a vehicle, comprising: at least one power device, a pair of power lines, and a processor, wherein the at least one power device is configured to supply power to an autonomous driving load or a conventional load in the vehicle; the pair of power lines is arranged between the at least one power device and the autonomous driving load; the processor is configured to determine whether a first power line in the pair of power lines has a fault, and in response to the fault of the first power line, supply power to the autonomous driving load through a second power line in the pair of power lines.

[0010] In an exemplary embodiment of the present invention, in response to a situation where at least one power line fails, the processor determines the type of fault, and may further include a communication device configured to send the type of fault to the autonomous driving control device.

[0011] In an exemplary embodiment of the present invention, at least one power device may be configured to include a first power device configured to supply power to a conventional load via a first conventional power line and to de-energize the first conventional power line in response to a fault in the first conventional power line.

[0012] In an exemplary embodiment of the present invention, it may further include: a second power device, wherein the second power device is configured to supply power to the autonomous driving load through a second conventional power line, and supply power through a redundant power line in response to a failure of the second conventional power line.

[0013] In an exemplary embodiment of the present invention, the processor may be configured to monitor an output current of at least one power device to determine whether a pair of power lines has failed.

[0014] In an exemplary embodiment of the present invention, it may further include: in response to a failure of a first power conversion module that converts a high voltage of a high-voltage battery into a first voltage level, a bidirectional converter is configured to convert a voltage of a second power conversion module that converts a high voltage of a high-voltage battery into a second voltage level to provide the converted voltage to at least one power device. The second power conversion module converts the high voltage of the high-voltage battery into a second voltage level.

[0015] In an exemplary embodiment of the present invention, it may further include: a first power storage node, a second power storage node, a first balancing device and a second balancing device, wherein the first power storage node is configured to store a voltage of a first voltage level; the second power storage node is configured to store a voltage of a second voltage level lower than the first voltage level; the first balancing device is configured to control the connection between the first power storage node and at least one power device; and the second balancing device is configured to control the connection between the second power storage node and at least one power device.

[0016] In an exemplary embodiment of the present invention, the processor can be configured to: in response to a failure of a first power conversion module that converts a high voltage of a high-voltage battery into a first voltage level, control a first balancing device to apply the voltage of a first power storage node to a first power device and a second power device that output the first voltage level among at least one power device.

[0017] In an exemplary embodiment of the present invention, the processor can be configured to: in response to a failure of a second power conversion module that converts a high voltage of a high-voltage battery into a second voltage level, control a second balancing device to apply the voltage of a second power storage node to a third power device and a fourth power device that output the second voltage level among at least one power device.

[0018] In an exemplary embodiment of the present invention, the processor can be configured to: drive the first power conversion module and the second power conversion module in response to the state of charge (SOC) of the high-voltage battery being equal to or greater than a predetermined reference value; and utilize the first power storage node and the second power storage node to provide voltage to at least one power device in response to the SOC of the high-voltage battery being less than a predetermined reference value.

[0019] In an exemplary embodiment of the present invention, the processor can be configured to: drive the first power conversion module in response to the voltage level output from the first power conversion module being equal to or greater than a predetermined reference value; and utilize the first power storage node to provide voltage to at least one power device in response to the voltage level output from the first power conversion module being less than a predetermined reference value.

[0020] A vehicle (e.g., an autonomous vehicle) may include the dual power supply device described above.

[0021] An exemplary embodiment of the present invention provides a system, which includes: a high-voltage battery, a first power conversion module, a second power conversion module and a dual power supply device; the first power conversion module is configured to convert the high voltage of the high-voltage battery into a first voltage level; the second power conversion module is configured to convert the high voltage of the high-voltage battery into a second voltage level lower than the first voltage level; the dual power supply device is configured to supply power to an autonomous driving load or a conventional load in a vehicle; wherein the dual power supply device includes: at least one power device, a pair of power lines and a processor, the at least one power device is configured to supply power to an autonomous driving load or a conventional load in the vehicle; the pair of power lines is arranged between at least one power device and the autonomous driving load; the processor is configured to determine whether a first power line in a pair of power lines has a fault, and in response to a fault in the first power line, supply power to the autonomous driving load through a second power line in the pair of power lines.

[0022] In an exemplary embodiment of the present invention, the dual power supply device may be configured to: in response to a failure of the first power conversion module, convert the second voltage level of the second power conversion module into the first voltage level to apply the converted voltage level to at least one power device.

[0023] In an exemplary embodiment of the present invention, the dual power supply device can be configured to: in response to a failure of the first power conversion module or the second power conversion module, utilize a power storage node to replace the failed first power conversion module or the second power conversion module to apply a voltage of a first voltage level or a voltage of a second voltage level to at least one power device.

[0024] In an exemplary embodiment of the present invention, a power controller configured to supply power to an autonomous driving load or a conventional load may be further included.

[0025] In an exemplary embodiment of the present invention, the dual power supply device may be configured to include one or more dual power supply devices disposed inside a vehicle.

[0026] A dual power supply method for a power supply device, the power supply device comprising a pair of power lines between at least one power device in a vehicle and an autonomous driving load, the method comprising: determining by a processor whether a first power line in the pair of power lines has failed; in response to a failure in the first power line in the pair of power lines, supplying power to the autonomous driving load via a second power line in the pair of power lines by the processor.

[0027] In an exemplary embodiment of the present invention, it may further include: in response to a fault in the first power line, determining, by a processor, a fault type; and sending the fault type to an automatic driving control device.

[0028] In an exemplary embodiment of the present invention, a pair of power lines includes a regular power line and a redundant power line, and supplying power to the autonomous driving load may include: in response to a failure of the regular power line, supplying power by the processor through the redundant power line.

[0029] In an exemplary embodiment of the present invention, the method may further include: monitoring, by a processor, an output current of at least one power device to determine whether a pair of power lines fails.

[0030] According to the present technology, by configuring the respective power supply lines between the power supply equipment unit and the autonomous driving load as a pair of parallel power lines, and supplying redundant power through another power line in response to the diagnosis of one power line, power supply failure of the autonomous driving vehicle can be prevented, thereby improving the reliability of the autonomous driving vehicle.

[0031] According to the present technology, in response to a failure of a power conversion module that converts electricity to a low voltage level, the reliability of an autonomous driving vehicle can be improved by utilizing a separate power storage device or other power conversion modules that have not failed and stably supplying power to the autonomous driving vehicle.

[0032] Furthermore, various effects that can be directly or indirectly recognized through this document can be provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A block diagram showing an example configuration of a vehicle system including dual power supply devices is shown.

[0034] Figure 2 An example detailed configuration of a dual power supply device is shown.

[0035] Figure 3 A configuration of a vehicle system for power supply redundancy according to a first exemplary embodiment of the present invention is shown.

[0036] Figure 4 A configuration of a vehicle system for power supply redundancy according to a second exemplary embodiment of the present invention is shown.

[0037] Figure 5 A flow chart showing a power supply redundancy method according to a first embodiment of the present invention is shown.

[0038] Figure 6 A configuration of a vehicle system for power supply redundancy according to a third exemplary embodiment of the present invention is shown.

[0039] Figure 7 A configuration of a vehicle system for power supply redundancy according to a fourth exemplary embodiment of the present invention is shown.

[0040] Figure 8 A flowchart for describing a dual power supply method according to a fourth exemplary embodiment of the present invention is shown.

[0041] Fig. 9 An exemplary computing system is shown. DETAILED DESCRIPTION

[0042] It should be understood that the term "vehicle" or "vehicle-based" or other similar terms used herein generally include motor vehicles, such as passenger vehicles including sport utility vehicles (SUVs), buses, trucks, various commercial vehicles, ships including various boats, vessels, aircraft, etc., and include hybrid vehicles, electric vehicles, plug-in hybrid electric vehicles, hydrogen-powered vehicles, and other alternative fuel vehicles (e.g., fuels derived from non-petroleum energy sources). As referred to herein, a hybrid vehicle is a vehicle having two or more power sources, such as both gasoline-powered and electric-powered vehicles.

[0043] The terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The singular forms "one", "a" and "said" used herein are intended to also include plural forms, unless the context clearly indicates other situations. It should be further understood that when the terms "including" and / or "including" are used in this specification, it is indicated that there are the features, numerical values, steps, operations, elements and / or components, but one or more other features, numerical values, steps, operations, elements, components, and / or their groups are not excluded from existing or adding. The terms "and / or" used herein include any and all combinations of one or more associated enumeration items. Throughout the specification, unless the contrary situation is clearly recorded, the words "including" and its variations (for example, "including" or "including") will be understood to mean including the elements but not excluding any other elements. In addition, the terms "unit", "... device", "... equipment" and "module" described in this specification refer to units for processing at least one function and operation, and can be implemented by hardware components or software components and combinations thereof.

[0044] In addition, the control logic of the present invention can be implemented as a non-volatile computer readable medium on a computer readable medium, which contains executable program instructions executed by a processor, a controller, etc. Examples of computer readable media include, but are not limited to, ROM, RAM, compact disk (CD)-ROM, magnetic tape, floppy disk, flash drive, smart card, and optical data storage device. The computer readable medium can also be distributed in a network-connected computer system so that the computer readable medium is stored and executed in a distributed manner, such as through a telematics server or a controller area network (CAN).

[0045] Hereinafter, some exemplary embodiments of the present invention will be described in detail with reference to the exemplary drawings. It should be noted that when adding reference numerals to the constituent elements of each figure, the same constituent elements are given the same reference numerals as much as possible even if they are indicated on different figures. When describing the exemplary embodiments, when it is determined that the detailed description of the known configuration or function associated with the exemplary embodiments may obscure the subject matter of the present invention, it is omitted.

[0046] When describing the constituent elements according to the present invention, terms such as first, second, "A", "B", (a) and (b) may be used. These terms are only used to distinguish one constituent element from another constituent element, and the nature, order or sequence of the constituent elements are not limited by these terms. In addition, unless otherwise defined, all terms (including scientific and technological terms) used herein have the same meaning as those commonly understood by those skilled in the art (technical personnel in the art) of the exemplary embodiments of the present invention. Terms defined in commonly used dictionaries should be understood to have meanings that match the contextual meanings in the relevant technical field and should not be understood to have ideal or overly formal meanings (unless such definitions are clearly made in the present application).

[0047] The present invention discloses a power supply method in response to a power line fault in a case where a 12V or 24V voltage system is mixed, as a technology of a low-voltage power distribution method for an autonomous driving vehicle.

[0048] In the following, reference will be made to Figures 1 to 9 Various exemplary embodiments of the present invention are described in detail.

[0049] Figure 1 A block diagram showing an example configuration of a vehicle system including a dual power supply device is shown, Figure 2 An example detailed configuration of a dual power supply device is shown.

[0050] refer to Figure 1 , a vehicle system according to an embodiment of the present invention includes: a high-voltage battery 101, a power conversion module (low-voltage DC-DC converters 102 and 103, hereinafter referred to as LDC), distribution boxes 104 and 105, a dual power supply device 100, a power controller 200, conventional loads 106 and 107, automatic driving loads 111, 112, 113 and 114, CAB loads 108 and 109, and battery sensors (smart battery sensors) 115 and 116.

[0051] The LDCs 102 and 103 are power conversion modules that step down a high voltage applied from the high voltage battery 101 to a low voltage of 12 V or 24 V. Furthermore, the LDCs 102 and 103 can charge the auxiliary battery in place of an alternator (AC generator) of an existing internal combustion engine.

[0052] The distribution boxes 104 and 105 may distribute the power converted by the LDCs 102 and 103 and transmit the power to each load and the power controller 200 .

[0053] The power controller 200 may provide the power distributed through the distribution boxes 104 and 105 to the CAB loads 108 and 109 and the autonomous driving loads 112 and 113. In this case, the power controller 200 may be connected to the autonomous driving loads 112 and 113 through the conventional power lines 205 and 207 and the redundant power lines 206 and 208. That is, the conventional power line 205 and the redundant power line 206 are connected in parallel between the power controller 200 and the autonomous driving load 112, and the conventional power line 207 and the redundant power line 208 are connected in parallel between the power controller 200 and the autonomous driving load 113. For example, the power controller 200 may include a powernet domain controller (PDC).

[0054] The autonomous driving loads 112 and 113 and the conventional loads 106 and 107, which are devices installed in the vehicle and use the vehicle power, may include loads that do not cause driving danger when driving due to the non-operation of the conventional loads 106 and 107. As an example, the conventional loads 106 and 107 may include air conditioners, door actuators, lighting devices (lamps), etc.

[0055] The autonomous driving loads 111, 112, 113, and 114 are devices for performing autonomous driving functions and utilizing the power of the vehicle. In addition, the autonomous driving loads 111, 112, 113, and 114 may include loads necessary for autonomous driving, and driving risks may be generated in response to the autonomous driving loads 111, 112, 113, and 114 not operating during autonomous driving. As an example, the autonomous driving loads 111, 112, 113, and 114 may include a brake controller (e.g., an anti-lock braking system (ABS), an electronic stability program (ESP), etc.), a steering controller (e.g., electric steering, etc.), and the like.

[0056] CAB loads 108 and 109 include loads located in the cab area of ​​a large vehicle (eg, a truck). As an example, CAB loads 108 and 109 may include lights and the like.

[0057] The battery sensors 115 and 116 may measure the state of charge (SOC) of the high voltage battery 101 to provide it to the dual power supply device 100 or the PDC 200 .

[0058] The dual power supply device 100 according to the present invention can be implemented inside or outside the vehicle. In this case, the dual power supply device 100 can be formed integrally with the internal control unit of the vehicle, or can be implemented as a separate hardware device connected to the control unit of the vehicle through a connecting device. For example, the dual power supply device 100 can be implemented integrally with the vehicle, can be implemented in the form of being installed or attached to the vehicle as a configuration independent of the vehicle, or a part of the dual power supply device 100 can be implemented integrally with the vehicle, and another part can be implemented in the form of being installed or attached to the vehicle as a configuration independent of the vehicle.

[0059] In the dual power supply device 100, output lines outputting 24V voltage and 12V voltage are respectively connected to autonomous driving loads 111 and 114. The power line connected to the autonomous driving load 111 and outputting 24V voltage is configured by connecting the conventional power line 201 and the redundant power line 202 in parallel. The power line connected to the autonomous driving load 114 and outputting 12V voltage is configured by connecting the conventional power line 203 and the redundant power line 204 in parallel.

[0060] Therefore, in response to a failure of one of the conventional power lines 201, 203, 205, and 207, each load can continue to be supplied with power through the redundant power line connected in parallel with the failed power line. Conversely, in response to a failure of one of the redundant power lines 202, 204, 206, and 208, each load can continue to be supplied with power through the conventional power line connected in parallel with the failed power line.

[0061] like Figure 1 As shown, in the present invention, a dual power supply device of 12V and 24V can be installed on the chassis part to perform normal power supply and emergency power supply for conventional loads and automatic driving loads, and the loads in the cab area can be configured using dual power supply lines by modifying the existing power controller 200.

[0062] refer to Figure 2 The dual power supply device 100 may include a communication device 110 , a storage device 120 , a power device portion 130 , a driver device 140 , and a processor 150 .

[0063] The communication device 110 is a hardware device implemented with various electronic circuits to send and receive signals through a wired connection, and can send and receive information based on an on-board device and an on-board network communication technology. As an example, the on-board network communication technology may include controller area network (CAN) communication, local interconnect network (LIN) communication, flexible ray communication, etc.

[0064] As an example, the communication device 110 can send the fault diagnosis information of the output power line of the dual power supply device 100 and the fault information of the LDCs 102 and 103 to the automatic driving control device 300 (in Figure 3 middle).

[0065] The storage device 120 may store data and / or algorithms required for the processor 150 to operate. As an example, the storage device 120 may store an algorithm for monitoring the state of a power line connected between the power device 130 and the autonomous driving load.

[0066] The storage device 120 may include at least one of the following types of storage media, such as flash memory, hard disk memory, micro memory and card memory (for example, a secure digital card (SD card) or an extreme digital card (XD card)), random access memory (RAM), static RAM (SRAM), read-only memory (ROM), programmable ROM (PROM), electrically erasable PROM (EEPROM), magnetic memory (MRAM), magnetic disk and optical disk.

[0067] The power device part 130 as a semiconductor device for a small load may be an intelligent power switch, and may be formed to include a plurality of power devices 131, 132, 133, and 134, such as Figure 3 As shown, the power devices 131 , 132 , 133 , and 134 may be connected to the autonomous driving loads 121 , 122 , 123 , and 124 , respectively, in a one-to-one correspondence.

[0068] By utilizing semiconductor devices, the power device portion 130 requires a shorter power recovery time than a switching element such as a conventional relay, and is also advantageous in terms of instantaneous power supply fluctuations.

[0069] The driver device 140 is a large-capacity electric driver device for a large-capacity load.

[0070] The processor 150 may be electrically connected to the communication device 110 , the storage device 120 , the power device portion 130 , the driver device 140 , etc., may electrically control each component, and may be a circuit that executes software instructions, thereby performing various data processing and calculations described below.

[0071] The processor 150 can perform overall control by processing the signals transmitted between each component of the dual power supply device 100 so that each component can perform their functions normally. The processor 150 can be implemented in the form of hardware, software, or a combination of hardware and software. For example, the processor 150 can be implemented as a microprocessor, but the present invention is not limited thereto.

[0072] The processor 150 can determine the fault type of the power line by monitoring the output current output from the power devices 131, 132, 133 and 134 and applied to the power line, and control the power applied through the redundant power line in response to the occurrence of the fault. In this case, the fault type may include overcurrent, open circuit, intermittent inrush current, short circuit to ground, short circuit to power supply, etc.

[0073] The processor 150 can determine whether a pair of power lines (a conventional power line and a redundant power line) between one or more power devices 131, 132, 133 and 134 and the autonomous driving loads 111 and 114 fails. In response to a failure of at least one power line in a pair of power lines, power can be supplied to the autonomous driving loads 111 and 114 through the other power line in the pair of power lines that has not failed.

[0074] In response to a failure of the conventional power line connected to the conventional loads 106 and 107 , the processor 150 may cut off power supply to the conventional loads 106 , 107 by blocking the conventional power line connected to the conventional loads 106 and 107 .

[0075] In response to a failure of the normal power lines 201 and 203 of the autonomous driving loads 111 and 114 , the processor 150 disconnects power from the normal power lines 201 and 203 and supplies power to the autonomous driving loads 111 and 114 through the redundant power lines 202 and 204 .

[0076] The processor 150 can monitor the output current of one or more power devices to determine whether a pair of power lines has failed. In this case, the processor 150 can determine whether both the conventional power line and the redundant power line have failed.

[0077] In response to a fault in at least one power line, the processor 150 may determine a fault type and may send the fault type to the automatic driving control device 300 via the communication device 110 .

[0078] Figure 3 A configuration of a vehicle system for power supply redundancy according to a first exemplary embodiment of the present invention is shown.

[0079] exist Figure 3 , as a detailed configuration of the dual power supply apparatus 100 , for convenience, the communication device 110 , the storage device 120 , and the driver device 140 are omitted, and power devices 131 , 132 , 133 , and 134 and a processor 150 are shown.

[0080] The power devices 131, 132, 133, and 134 are connected to the autonomous driving loads 121, 122, 123, and 124, respectively, and one power device and one autonomous driving load are connected via a pair of power lines having a parallel connection structure of a conventional power line and a redundant power line. Accordingly, the dual power supply device 100 can determine the fault state (e.g., open circuit, short circuit to ground, short circuit to power supply, intermittent inrush current, etc.) of the power line (conventional power line or redundant power line) connected between the power devices 131, 132, 133, and 134 and the autonomous driving loads 121, 122, 123, and 124 by monitoring the output current of each of the power devices 131, 132, 133, and 134, respectively. In response to the occurrence of a fault, the output of the corresponding power device can be immediately cut off and power can be supplied through the redundant power line.

[0081] In response to a failure of the regular power line, the power devices 131 , 132 , 133 , and 134 may be powered by the redundant power line.

[0082] In this case, the autonomous driving loads 121 and 122 are loads utilizing a 24V voltage, and the autonomous driving loads 123 and 124 are loads utilizing a 12V voltage.

[0083] The power devices 131 and 132 receive a 24V voltage from the LDC 102 to apply it to the autonomous driving loads 121 and 122, respectively. The power devices 133 and 134 receive a 12V voltage from the LDC 103 to apply it to the autonomous driving loads 123 and 124, respectively.

[0084] Figure 3 An example is disclosed in which a dual power line is configured not only in the dual power supply device 100 but also in the power controller 200. That is, for a commercial vehicle having a long vehicle length, two dual power supply devices 100 may be provided for the dual power line configuration, or the dual power line may be configured using one dual power supply device 100 and one power controller 200. In this case, the power controller 200 may play the same role as that of the dual power supply device 300.

[0085] In addition, the dual power supply device 100 can diagnose the fault type, and can send the fault type to the automatic driving control device 300 through the communication bus. Accordingly, the automatic driving control device 300 can perform automatic driving control according to the fault type. For example, the fault type may include an open circuit, a short circuit to the ground, a short circuit to the power supply, an intermittent inrush current, an overload, etc., and a control such as reducing the automatic driving level can be performed according to the fault type. In addition, in response to the situation where the fault type is an overload, the dual power supply device 100 can determine it as a temporary overload, and can diagnose the fault type again after a predetermined time has passed. In addition, in response to the situation where the fault type is an open circuit state, the dual power supply device 100 completely cuts off the power of the conventional power line that has failed. In addition, in response to the failure of both the conventional power line and the redundant power line, the processor 150 can completely cut off the power applied to the corresponding load, and the automatic driving level can be changed to level 1 for safety reasons.

[0086] Furthermore, the dual power supply device 100 may be generally installed in two locations, the chassis and the interior, to ensure ease of vehicle development and to reduce the number of wires used.

[0087] The power controller 200 may also include a plurality of power devices 231, 232, 233 and 234 and a processor 250 for dual power supply, and may further include a communication device, a storage device, a driver device, etc. Figure 2 Dual power supply device 100.

[0088] The power devices 231 , 232 , 233 , and 234 are connected to the autonomous driving loads 221 , 222 , 223 , and 234 , respectively, and one power device corresponds to one autonomous driving load.

[0089] A pair of parallel power lines having a normal power line and a redundant power line are used to connect the power devices 231, 232, 233, and 234 to each of the autonomous driving loads 221, 222, 223, and 234. Accordingly, in response to a failure of the normal power line, the power devices 231, 232, 233, and 234 can be powered by the redundant power line.

[0090] In addition, the processor 250 can diagnose the type of fault that has occurred, and can send the type of fault that has occurred to the automatic driving control device 300 through the communication bus.

[0091] Figure 4 A configuration of a vehicle system for power supply redundancy according to a second exemplary embodiment of the present invention is shown.

[0092] refer to Figure 4The power devices 131 and 133 of the dual power supply device 100 supply power to conventional loads 151 and 153 , and the power devices 132 and 134 supply power to autonomous driving loads 152 and 154 .

[0093] In this case, in order to supply power to the normal loads 151 and 153, only the normal power line is connected, and in order to supply power to the automatic driving loads 152 and 154, the normal power line and the redundant power line are connected.

[0094] The power devices 231 and 233 of the power controller 200 supply power to the normal loads 251 and 253 , and the power devices 232 and 234 supply power to the automatic driving loads 252 and 254 .

[0095] In this case, in order to supply power to the normal loads 251 and 253, only the normal power line is connected, and in order to supply power to the automatic driving loads 252 and 254, the normal power line and the redundant power line are connected.

[0096] Therefore, the dual power supply device 100 according to the present invention can supply power to the normal load and the autonomous driving load together, and can connect the normal power line and the redundant power line in parallel to achieve redundancy in response to a failure of the power line of the autonomous driving load.

[0097] In the following, reference will be made to Figure 5 A dual power supply method according to an exemplary embodiment of the present invention is described. Figure 5 A flow chart showing an exemplary dual powering method is shown.

[0098] In the following, it is assumed Figure 1 and Figure 3 The dual power supply device 100 performs Figure 5 In addition, Figure 5 In the description, the operations described as being performed by the device can be understood as being controlled by the processor 150 of the dual power supply device 100 and the processor 250 of the power controller 200.

[0099] refer to Figure 5 , the dual power supply device 100 monitors the output current of the power devices 131, 132, 133, and 134 (step S101). The dual power supply device 100 can determine whether the output current applied from the power devices 131, 132, 133, and 134 to the autonomous driving loads 121, 122, 123, and 124 through the conventional power lines (24V and 12V) is less than a predetermined reference value. In response to the output current applied from the power devices 131, 132, 133, and 134 to the autonomous driving loads 121, 122, 123, and 124 being less than the predetermined reference value, the dual power supply device 100 can determine that the corresponding conventional power line has failed.

[0100] In response to the situation that all normal power lines have not failed, the dual power supply device continues to supply power to the loads in the vehicle through the normal power lines (step S103 ).

[0101] In response to a situation where one of the regular power lines fails, the dual power supply device 100 supplies power through the redundant power line instead of the failed power line (step S104 ).

[0102] Subsequently, the dual power supply device 100 sends the fault diagnosis result to the automatic driving control device 300 (step S105 ), and the automatic driving control device 300 performs automatic driving corresponding control according to the fault diagnosis result received from the dual power supply device 100 (step S106 ).

[0103] Figure 6 FIG. 2 shows a configuration of a vehicle system for power supply redundancy according to a third exemplary embodiment of the present invention. Figure 6 In Figure 6 As shown, in response to a failure of the conventional power lines between the power devices 131 and 133 and the conventional loads 151 and 153 and between the power devices 132 and 134 and the autonomous driving loads 152 and 154, the process of disconnecting the failed conventional power lines and supplying power to the autonomous driving loads 152 and 154 through the redundant power lines is the same. However, Figure 6 An example of supplying power to a normal load or an autonomous driving load in consideration of a failure of the LDCs 102 and 103 is shown.

[0104] To this end, the dual power supply device 100 can be Figure 2 In the detailed configuration of FIG. 1 , a bidirectional converter 160 is added to configure.

[0105] The dual power supply device 100 may receive LDC fault information from LDCs 102 and 103 or from another control device (e.g., a battery management device) to determine whether the LDC has failed. In this case, the dual power supply device 100 may not receive power from LDCs 102 and 103, or may receive LDC fault information from a separate control device (e.g., a battery management device, etc.) to determine whether the LDC has failed.

[0106] In response to a failure of at least one of the LDCs 102 and 103, the bidirectional converter 160 converts the voltage of the LDC that has not failed, so that the output voltage of the LDC that has not failed can be supplied to the power device. For example, in response to a failure of the LDC 102 that provides a 24V voltage, the bidirectional converter 160 can convert the 12V voltage applied from the LDC 103 that has not failed into a 24V voltage to apply it to the power devices 131 and 132 that require a 24V voltage.

[0107] Conversely, in response to the LDC 103 supplying the 12V voltage failing, the bidirectional converter 160 may convert the 24V voltage applied from the LDC 102 that has not failed into the 12V voltage to apply it to the power devices 133 and 134 requiring the 12V voltage.

[0108] Therefore, in the third exemplary embodiment of the present invention, power is supplied to the load in consideration of a failure of the power line for supplying power from the power device to the load and a failure of the LDC, so that the safety of vehicle travel can be improved.

[0109] like Figure 6 As shown, in response to a failure of an LDC, the bidirectional converter 160 is able to provide voltage through an unfailed LDC.

[0110] Figure 7 FIG. 2 shows a configuration of a vehicle system for power supply redundancy according to a fourth exemplary embodiment of the present invention. Figure 7 In Figure 6 As shown, in response to a failure of the conventional power lines between the power devices 131 and 133 and the conventional loads 151 and 153 and between the power devices 132 and 134 and the autonomous driving loads 152 and 154, the process of disconnecting the failed conventional power lines and supplying power to the autonomous driving loads 152 and 154 through the redundant power lines is the same. However, Figure 7 An example of supplying power to a normal load or an autonomous driving load in consideration of a failure of the LDCs 102 and 103 is shown.

[0111] To this end, the dual power supply device 100 may be configured separately for 24 V and 12 V. That is, the dual power supply device 100 includes a 24 V dual power supply device 170 and a 12 V dual power supply device 180 .

[0112] The dual power supply devices 170 and 180 can be respectively Figure 2 The configuration further includes power storage nodes 501 and 502. However, for ease of description, Figure 7 In, omitted Figure 2 1 , the communication device 110 , the storage device 120 , the driver device 140 , and the processor 150 , but power devices 171 , 172 , 181 , and 182 , switch elements SW1 and SW2 , and power storage nodes 501 and 502 are shown.

[0113] The 24V dual power supply device 170 includes power devices 171 and 172 , a switch element SW1 , and a power storage node 501 .

[0114] In response to a failure of LDC 102, processor 150 (eg, Figure 21) can control the switch element SW1 to switch the first side of the switch element SW1 connected to the output terminal of the LDC 102 to the terminal connected to the power storage node 501. In this case, the second side of the switch element SW1 is connected to the power devices 171 and 172. Accordingly, in response to the failure of the LDC 102, the 24V voltage of the power storage node 501 can be applied to the power devices 171 and 172, so that the power devices 171 and 172 can normally supply power to the conventional load 151 and the autonomous driving load 152.

[0115] Furthermore, the 12V dual power supply device 180 includes power devices 181 and 182 , a switch element SW2 , and a power storage node 502 .

[0116] In response to a failure of LDC 103, processor 150 (eg Figure 2 103) can control the switch element SW2 to switch the first side of the switch element SW2 connected to the output terminal of the LDC 103 to the terminal connected to the power storage node 502. In this case, the second side of the switch element SW2 is connected to the power devices 181 and 182. Accordingly, in response to the failure of the LDC 103, the 12V voltage of the power storage node 502 can be applied to the power devices 181 and 182, so that the power devices 181 and 182 can normally supply power to the conventional load 153 and the autonomous driving load 154.

[0117] Figure 7 An example is disclosed in which the voltages of the power storage nodes 501 and 502 are applied to the output voltage lines of the LDCs 102 and 103 by including the switch elements SW1 and SW2 as balancing elements, thereby balancing the voltages of the power storage nodes 501 and 502 , but various elements may be used as the balancing element.

[0118] In the following, reference will be made to Figure 8 A dual power supply method according to a fourth exemplary embodiment of the present invention is described. Figure 8 A flowchart for describing a dual power supply method according to a fourth exemplary embodiment of the present invention is shown.

[0119] In the following, it is assumed Figure 1 and Figure 7 The dual power supply device 100 performs Figure 8 In addition, Figure 8 In the description, the operations described as being performed by the device can be understood as being controlled by the processor 150 of the dual power supply device 100 and the processor 250 of the power controller 200.

[0120] refer to Figure 8, the dual power supply device 100 determines whether the vehicle is in a key start state (step S201). That is, the dual power supply device 100 determines whether the start state of the vehicle is turned on.

[0121] In the case of the key start state, the vehicle system outputs voltage through the LDC (step S202 ).

[0122] Subsequently, the dual power supply device 100 determines whether the LDCs 102 and 103 fail or whether the normal power line fails (step S203 ).

[0123] In response to the situation that the LDCs 102 and 103 do not fail and the conventional power lines do not fail, power supply in a normal state continues.

[0124] In response to a situation where a conventional power line fails, the dual power supply device 100 supplies power to the autonomous driving load through the redundant power line.

[0125] On the other hand, in response to the failure of the LDCs 102 and 103 , the dual power supply device 100 outputs the voltage of the power storage nodes 501 and 502 to replace the failed LDC to provide voltage to the normal load or the autonomous driving load (step S205 ).

[0126] In response to the case where the vehicle is not in the key start state in step S201, the dual power supply device 100 determines whether the state of charge (SOC) of the high voltage battery 101 is less than a predetermined reference value K (step S204). In this case, the battery sensors 115 and 116 can measure the SOC of the high voltage battery 101 converted from the LDCs 102 and 103, and the dual power supply device 100 can receive the SOC measurement results from the battery sensors 115 and 116 to determine the voltage levels output from the LDCs 102 and 103, respectively.

[0127] When the SOC (State of Charge) of the high voltage battery 101 of the vehicle is greater than a predetermined reference value K, the dual power supply apparatus 100 outputs a voltage through the LDCs 102 and 103 (step S202 ).

[0128] Meanwhile, in response to the SOC (State of Charge) of the high voltage battery 101 being less than a predetermined reference value K, a voltage may be output through the power storage nodes 501 and 502 (step S205 ).

[0129] For example, in response to a situation where the voltage level output from the LDC 102 is less than a predetermined reference value, the output voltage level of the LDC 102 is increased through the power storage node 501 .

[0130] like Figure 7 and Figure 8As shown, according to the present invention, in response to a failure of an LDC, power can be supplied through separate power storage nodes 501 and 502 using a switching element to replace the failed LDC.

[0131] According to the present technology, by configuring the respective power lines between the power devices and the autonomous driving loads in parallel and providing redundant power through another power line in response to a fault diagnosis of one power line, it is possible to ensure that the autonomous driving vehicle receives power without interruption, thereby improving the reliability of the autonomous driving vehicle.

[0132] Furthermore, according to the present invention, by configuring to select a power line using a power device that is a semiconductor device, it is advantageous to shorten the time for power recovery and to facilitate a case of instantaneous power variation.

[0133] Furthermore, according to the present invention, the reliability of the autonomous driving vehicle can be improved by considering and responding to failures of the LDC and failures of the respective power supply lines between the power device and the autonomous driving load.

[0134] Fig. 9 An exemplary computing system is shown.

[0135] refer to Fig. 9 The computing system 1000 includes at least one processor 1100 , a memory 1300 , a user interface input device 1400 , a user interface output device 1500 , a storage device 1600 , and a network interface 1700 connected via a bus 1200 .

[0136] The processor 1100 may be a central processing unit (CPU) or a semiconductor device that performs processing based on instructions stored in the memory 1300 and / or the storage device 1600. The memory 1300 and the storage device 1600 may include various types of volatile or non-volatile storage media. For example, the memory 1300 may include a read-only memory (ROM) 1310 and a random access memory (RAM) 1320.

[0137] Therefore, the steps of the method or algorithm described in conjunction with the exemplary embodiments disclosed herein may be directly implemented by hardware, software modules, or a combination of both executed by the processor 1100. The software module may be located in a storage medium (i.e., the memory 1300 and / or the storage device 1600), such as a RAM memory, a flash memory, a ROM memory, an EPROM memory, an EEPROM memory, a register, a hard disk, a removable disk, and a CD-ROM.

[0138] An exemplary storage medium is connected to the processor 1100, and the processor 1100 can read information from the storage medium and write information to the storage medium. Alternatively, the storage medium can be integrated with the processor 1100. The processor and the storage medium can be located in an application specific integrated circuit (ASIC). The ASIC can be located in a user terminal. Alternatively, the processor and the storage medium can be located in a user terminal as separate components.

[0139] The above description is merely an illustration of the technical idea of ​​the present invention, and those skilled in the art to which the present invention belongs may make various modifications and changes without departing from the basic features of the present invention.

[0140] Therefore, the exemplary embodiments disclosed in the present invention are not intended to limit the technical ideas of the present invention, but are intended to explain them, and the scope of the technical ideas of the present invention is not limited by these exemplary embodiments. The protection scope of the present invention should be interpreted by the attached claims, and all technical ideas within the equivalent scope should be interpreted as included in the scope of the present invention.

Claims

1. A dual power supply device for a vehicle, the dual power supply device include: at least one power device configured to supply power to an autonomous driving load or a conventional load in a vehicle; a pair of power lines disposed between the at least one power device and the autonomous driving load, and A processor is configured to determine whether a first power line of the pair of power lines has failed, and in response to the failure of the first power line, supply power to the autonomous driving load through a second power line of the pair of power lines.

2. The dual power supply device for a vehicle according to claim 1, in, The processor is configured to determine a fault type of the first power line, Further comprising a communication device configured to send the fault type to the automatic driving control device.

3. The dual power supply device for a vehicle according to claim 1, in, The at least one power device includes a first power device configured to supply power to a conventional load through a first conventional power line and to de-energize the first conventional power line in response to a fault of the first conventional power line.

4. The dual power supply device for a vehicle according to claim 3, further comprising: include: The second power device is configured to supply power to the autonomous driving load through the second normal power line and, in response to a failure of the second normal power line, supply power through the redundant power line.

5. The dual power supply device for a vehicle according to claim 1, in, The processor is configured to monitor an output current of at least one power device to determine whether at least one of the pair of power lines has failed.

6. The dual power supply device for a vehicle according to claim 1, in, In response to a failure of a first power conversion module that converts a high voltage of a high voltage battery into a first voltage level, the bidirectional converter is configured to convert a voltage of a second power conversion module that converts a high voltage of a high voltage battery into a second voltage level to provide the converted voltage to at least one power device.

7. The dual power supply device for a vehicle according to claim 1, further comprising: include: a first power storage node configured to store a voltage at a first voltage level; a second power storage node configured to store a voltage at a second voltage level lower than the first voltage level; a first balancing device configured to control a connection between the first power storage node and at least one power device; and A second balancing device is configured to control the connection between the second power storage node and the at least one power device.

8. The dual power supply device for a vehicle according to claim 7, in, The processor is configured to, in response to a failure of a first power conversion module that converts a high voltage of a high voltage battery into a first voltage level, control a first balancing device to apply a voltage of a first power storage node to a first power device and a second power device that output the first voltage level among at least one power device.

9. The dual power supply device for a vehicle according to claim 8, in, The processor is configured to, in response to a failure of a second power conversion module that converts a high voltage of a high voltage battery into a second voltage level, control a second balancing device to apply a voltage of a second power storage node to a third power device and a fourth power device that output the second voltage level among at least one power device.

10. The dual power supply device for a vehicle according to claim 9, in, The processor is configured to: drive the first power conversion module and the second power conversion module in response to the state of charge of the high-voltage battery being equal to or greater than a predetermined reference value; and utilize the first power storage node and the second power storage node to provide voltage to at least one power device in response to the state of charge of the high-voltage battery being less than a predetermined reference value.

11. The dual power supply device for a vehicle according to claim 9, in, The processor is configured to: drive the first power conversion module in response to a voltage level output from the first power conversion module being equal to or greater than a predetermined reference value; and use the first power storage node to provide voltage to at least one power device in response to a voltage level output from the first power conversion module being less than a predetermined reference value. 12 . A vehicle comprising the dual power supply device for a vehicle according to claim 1 .

13. A system, wherein include: High voltage battery; a first power conversion module configured to convert a high voltage of the high voltage battery into a first voltage level; a second power conversion module configured to convert the high voltage of the high voltage battery into a second voltage level lower than the first voltage level; as well as A dual power supply device configured to supply power to an autonomous driving load or a conventional load in a vehicle; Wherein, the dual power supply equipment includes: at least one power device configured to supply power to an autonomous driving load or a conventional load in a vehicle; a pair of power lines disposed between the at least one power device and the autonomous driving load; and A processor is configured to determine whether a first power line of the pair of power lines has failed, and in response to the failure of the first power line, supply power to the autonomous driving load through a second power line of the pair of power lines.

14. The system according to claim 13, in, The dual power supply device is configured to: in response to a failure of the first power conversion module, convert the second voltage level of the second power conversion module into the first voltage level to apply the converted voltage level to at least one power device.

15. The system according to claim 13, in, The dual power supply device is configured to: in response to a failure of a first power conversion module or a second power conversion module, utilize a power storage node to replace the failed first power conversion module or the failed second power conversion module to apply a voltage of a first voltage level or a voltage of a second voltage level to at least one power device.

16. The system according to claim 13, further comprising: include: A power controller is configured to supply power to an autonomous driving load or a conventional load.

17. A dual power supply method for a power supply device, the power supply device comprising a pair of power lines arranged between at least one power device in a vehicle and an autonomous driving load, the method include: determining, by a processor, whether a first power line of a pair of power lines has failed; In response to a failure of the first power line, the processor supplies power to the autonomous driving load via a second power line of the pair of power lines.

18. The dual power supply method according to claim 17, further comprising: include: In response to a fault on the first power line, determining, by a processor, a type of fault; Send the fault type to the autopilot control device.

19. The dual power supply method according to claim 17, in, The pair of power lines includes a normal power line and a redundant power line, Powering autonomous driving loads includes: In response to a failure of the regular power line, power is supplied by the processor via the redundant power line.

20. The dual power supply method according to claim 17, further comprising: include: An output current of at least one power device is monitored by a processor to determine whether at least one of a pair of power lines has failed.

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